These thoughts are more useful here than in my computer...
1. What is the general goal of the feature?
In the context of mapping reality with Collect, it would be very useful to see on the geowidget maps the lines, points or polygon we drew before in the form. For the moment each time we want to create a geometry, the map is empty and it is hard to see what has already been mapped.
This raise the question of defining how to style each object following one of its attribute.
As an extension, such a map should be very interesting to complete the jump menu navigation available in collect. The user can check that all the area he was supposed to map is complete or not.
2. What are some example use cases for this feature?
for the method we deploy within this European project : https://life-biodivpaysanne.fr/, we aim to map 60 farm's infrastructures that may increase or support biodiversity (14 types like hedges, grassy stripes, herbaceous land, dry stone walls, isolated trees, remarkable trees, canals, ponds...)
For each object we evaluate 3 indicators (composition, structure and degradation) with various indicators adapted for each type.
The form is an evolution of this one, to be adapted to the particular habitats we want to describe and monitor. We will publish it as soon as we'll get some time to do it 
3. What can you contribute to making this feature a reality?
Discuss about it to better define the need 